
Steve S. answered 04/07/14
Tutor
5
(3)
Tutoring in Precalculus, Trig, and Differential Calculus
This y=3x-7 is a linear equation in slope-intercept form.
It relates the values of x and y. If you set one of them to an actual value, you can solve for the value of the other.
This (-2,___) is an ordered pair of the form (x,y) with an x-value of -2 and the y-value missing.
You're supposed to use the equation they gave you to determine the y-value.
y=3(-2)-7 = -6 - 7 = -13.
So now you complete the ordered pair: (-2,-13)